<?php
session_start();
$host="localhost"; // Host name 
$username="root"; // Mysql username 
$password=""; // Mysql password 
$db_name="faran_db"; // Database name 
$tbl_name="student_login"; // Table name 

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB");

// username and password sent from form 
$myusername=$_POST['username']; 
$mypassword=$_POST['password']; 

// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);

$sql="SELECT * FROM $tbl_name WHERE reg_no='$myusername' and password='$mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$nrows = mysql_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row

if($nrows==1){
	// Register $myusername, $mypassword and redirect to file "login_success.php"
	session_start();
	
	while($rows=mysql_fetch_array($result)){
		// Redirect according to user type
		if($rows['type']=='student'){
		$_SESSION['student']=$myusername;
			header("location:home student.php");
		}
	}
}else{
	header("location:index.php?msg=1");
}
?>